944 S2 - High Pressure Fuel Regulator

[gemmerson]

I am doing some slight upgrades to my S2,... K&N, de-cat exhaust and its already got a upgrade chip. The local indie suggested a high pressure fuel regulator as well so just wondered if anyone has any experience of these, which ones to go for and any benefits they have made.?

With all that done it should give take power from 211 to nearer 225 bhp, which is ok for a couple of hundred quid !!

Any thoughts welcome.

George

 

[Peter Empson]

Sorry but I just can't see it. If the engine is fit I think you'll be in the 220 bhp league that many of us are at with similar mods, especially with an off the shelf chip and not a rolling road remap (although dyno's can be made to say pretty much anything you want []).

The standard fpr should flow perfectly sufficiently so cannot see where the gains will be myself, I'm not even planning on changing mine when running low boost...

 

[edh]

More fuel is just going to make you run rich isn't it?

If anything that could reduce your performance. Unless your injectors are maxing out (which they won't be) I can't really see why this would be a good idea.

 

[Diver944]

The standard S2 FPR runs at 3 bar fuel pressure.

It is the upgrade of choice for modified Turbos (that come with a 2.5 bar FPR as standard) and my own car runs quite happily on the S2 FPR with just under 400bhp

Which Indie suggested this?

 

[edh]

ORIGINAL: Diver944

The standard S2 FPR runs at 3 bar fuel pressure.

It is the upgrade of choice for modified Turbos (that come with a 2.5 bar FPR as standard) and my own car runs quite happily on the S2 FPR with just under 400bhp

Which Indie suggested this?

maybe you should add modified Turbos ....with suitable chips....? []

I bet you're not on standard injectors though..[]

 

[Peter Empson]

I should also have added that the injectors will be maxing out well before the fpr becomes an issue, so they are the weaker link of the two, but are still more than sufficient for the job required of them.

 

[Neil Haughey]

Its a nonsense I am afraid, and the Indie that suggested it is a BS merchant. When my FPR was worn I was running to much fuel pressure at the rail, the result is the injectors struggled, the car ran rougher at low rpm, drank fuel and had less power. It was Jon Mitchell that spotted that one as I was sure the car wasn't quite right for some time, but didn't have any equipment to measure fuel pressure etc.. This was with the Promax chip as well so any idea that it goes together with modified chips on NA cars is also BS.